API Reference

Retrieve a Suno v2 task

Retrieve a Suno v2 task. The following is this gateway’s public contract.

GET https://api.tu-zi.com/suno/v2/fetch/{task_id}

Preview guide

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# Retrieve a Suno v2 task

Retrieve a Suno v2 task. The following is this gateway’s public contract.

## Endpoint and authentication

`GET https://api.tu-zi.com/suno/v2/fetch/{task_id}`

Transport: json

Use an inference API key. Examples contain placeholders; read credentials from environment variables.

```http
Authorization: Bearer YOUR_API_KEY
```

## Path parameters

| Field | Type | Required | Description / constraints |
| --- | --- | --- | --- |
| task_id | string | Yes | Public task ID returned by this gateway. Example: YOUR_TASK_ID |

## Before running

Replace https://api.tu-zi.com with this site origin (do not append /v1 twice), and YOUR_MODEL with the exact marketplace model ID. Install requests for Python; use Node.js 20+ and save JavaScript as .mjs. WebSocket samples list their own dependencies.

Create an inference key on the site and set API_KEY in the environment; replace YOUR_API_KEY in cURL. Prepare local input.png/input.wav files for upload examples.

Start with a minimal request, then read the result using the response fields below. For async APIs, a returned task ID requires polling; acceptance does not mean generation has finished.

## Code examples

### curl

```bash
curl --request GET 'https://api.tu-zi.com/suno/v2/fetch/YOUR_TASK_ID' \
  --header 'Authorization: Bearer YOUR_API_KEY'
```

### python

```python
import json
import os
import requests

url = "https://api.tu-zi.com/suno/v2/fetch/YOUR_TASK_ID"
headers = json.loads("{\"Authorization\":\"Bearer YOUR_API_KEY\"}")
headers["Authorization"] = "Bearer " + os.environ["API_KEY"]
response = requests.request("GET", url, headers=headers, timeout=120)
response.raise_for_status()
result = response.json()
if isinstance(result, dict) and (result.get("success") is False or result.get("error")):
    raise RuntimeError(json.dumps(result, ensure_ascii=False))
print(result)  # Also inspect protocol-specific status/code fields.
```

### javascript

```javascript
// Node.js 20+
const url = "https://api.tu-zi.com/suno/v2/fetch/YOUR_TASK_ID";
const headers = {
  "Authorization": "Bearer YOUR_API_KEY"
};
headers.Authorization = 'Bearer ' + process.env.API_KEY;
const response = await fetch(url, { method: "GET", headers });
if (!response.ok) throw new Error(await response.text());
const result = await response.json();
if (result?.success === false || result?.error) throw new Error(JSON.stringify(result));
console.log(result); // Also inspect protocol-specific status/code fields.
```

## Response fields

| Field | Type | Description / constraints |
| --- | --- | --- |
| code | string | success for a successful query. |
| data.task_id | string | Public gateway task ID. |
| data.status | string | SUCCESS / FAILURE are terminal; other states are pending. |
| data.progress | string | Task progress. |
| data.fail_reason | string | Failure reason when present. |
| data.data | object \| array | Action result, including musics or other outputs; resource IDs are gateway public IDs. |

Illustrative response; some endpoints show essential fields only. Optional fields may be absent.

```json
{
  "code": "success",
  "message": "success",
  "data": {
    "task_id": "task_example",
    "status": "SUBMITTED",
    "progress": "0%"
  }
}
```

## Errors and retries

Check HTTP status and protocol-specific errors; do not mix error formats across protocols. For 401/403 check credentials and permissions, for 429 back off, and for 5xx check gateway/upstream status. Error bodies may contain error/message/code depending on the protocol.

Use bounded exponential backoff for reads. Do not blindly retry task creation, generation, or key mutations, to avoid duplicate billing or execution.

## Constraints

Only Suno v2 tasks in the current account and application scope are returned. Foreign, missing and non-v2 tasks return errors. Use returned public asset IDs for follow-up actions, not provider IDs.

## Documentation source

Definition version: 1

Reviewed: 2026-11-02

Source: https://api.tu-zi.com/en/docs/api/reference-relay-suno-v2-fetch

This export contains documentation and examples only, without real credentials, account data or user requests.

Updated 2026-11-02 · Reviewed 2026-11-02

Endpoint and authentication

GET https://api.tu-zi.com/suno/v2/fetch/{task_id}

Transport: json

Use an inference API key. Examples contain placeholders; read credentials from environment variables.

Authorization: Bearer YOUR_API_KEY

Before running

Replace https://api.tu-zi.com with this site origin (do not append /v1 twice), and YOUR_MODEL with the exact marketplace model ID. Install requests for Python; use Node.js 20+ and save JavaScript as .mjs. WebSocket samples list their own dependencies.

Create an inference key on the site and set API_KEY in the environment; replace YOUR_API_KEY in cURL. Prepare local input.png/input.wav files for upload examples.

Start with a minimal request, then read the result using the response fields below. For async APIs, a returned task ID requires polling; acceptance does not mean generation has finished.

Constraints

Only Suno v2 tasks in the current account and application scope are returned. Foreign, missing and non-v2 tasks return errors. Use returned public asset IDs for follow-up actions, not provider IDs.

Path parameters

Field	Type	Required	Description / constraints
task_id	string	Yes	Public task ID returned by this gateway. Example: YOUR_TASK_ID

Response fields

Field	Type	Description / constraints
code	string	success for a successful query.
data.task_id	string	Public gateway task ID.
data.status	string	SUCCESS / FAILURE are terminal; other states are pending.
data.progress	string	Task progress.
data.fail_reason	string	Failure reason when present.
data.data	object \| array	Action result, including musics or other outputs; resource IDs are gateway public IDs.

Illustrative response; some endpoints show essential fields only. Optional fields may be absent.

{
  "code": "success",
  "message": "success",
  "data": {
    "task_id": "task_example",
    "status": "SUBMITTED",
    "progress": "0%"
  }
}

Errors and retries

Check HTTP status and protocol-specific errors; do not mix error formats across protocols. For 401/403 check credentials and permissions, for 429 back off, and for 5xx check gateway/upstream status. Error bodies may contain error/message/code depending on the protocol.

Use bounded exponential backoff for reads. Do not blindly retry task creation, generation, or key mutations, to avoid duplicate billing or execution.

Document information and sources

Documentation source

Definition version: 1

Reviewed: 2026-11-02

Source: https://api.tu-zi.com/en/docs/api/reference-relay-suno-v2-fetch

This export contains documentation and examples only, without real credentials, account data or user requests.

Request examples

curl --request GET 'https://api.tu-zi.com/suno/v2/fetch/YOUR_TASK_ID' \
  --header 'Authorization: Bearer YOUR_API_KEY'

import json
import os
import requests

url = "https://api.tu-zi.com/suno/v2/fetch/YOUR_TASK_ID"
headers = json.loads("{\"Authorization\":\"Bearer YOUR_API_KEY\"}")
headers["Authorization"] = "Bearer " + os.environ["API_KEY"]
response = requests.request("GET", url, headers=headers, timeout=120)
response.raise_for_status()
result = response.json()
if isinstance(result, dict) and (result.get("success") is False or result.get("error")):
    raise RuntimeError(json.dumps(result, ensure_ascii=False))
print(result)  # Also inspect protocol-specific status/code fields.

// Node.js 20+
const url = "https://api.tu-zi.com/suno/v2/fetch/YOUR_TASK_ID";
const headers = {
  "Authorization": "Bearer YOUR_API_KEY"
};
headers.Authorization = 'Bearer ' + process.env.API_KEY;
const response = await fetch(url, { method: "GET", headers });
if (!response.ok) throw new Error(await response.text());
const result = await response.json();
if (result?.success === false || result?.error) throw new Error(JSON.stringify(result));
console.log(result); // Also inspect protocol-specific status/code fields.